Separating the impacts of climate change and human activities on actual evapotranspiration in Aksu River Basin ecosystems, Northwest China

doi:10.2166/nh.2018.136

	Separating the impacts of climate change and human activities on actual evapotranspiration in Aksu River Basin ecosystems, Northwest China
	Yang, Peng 1,2; Xia, Jun 1,3; Zhan, Chesheng 1; Chen, Xuejuan 1,2; Qiao, Yunfeng 4; Chen, Jie 3
刊名	HYDROLOGY RESEARCH
	2018-12-01
卷号	49 期号:6 页码:1740-1752
关键词	actual evapotranspiration Aksu River Basin land use cover change vegetation interfaces processes model water balance
ISSN号	0029-1277
DOI	10.2166/nh.2018.136
通讯作者	Xia, Jun(xiaj@igsnrr.ac.cn)
英文摘要	Separating the impacts of climate change and human activity on actual evapotranspiration (ET) is important for reducing comprehensive risk and improving the adaptability of water resource systems. In this study, the spatiotemporal distribution of actual ET in the Aksu River Basin, Northwest China, during the period 2000-2015 was evaluated using the Vegetation Interfaces Processes model and Moderate Resolution Imaging Spectroradiometer-Normalized Difference Vegetation Index. The impact of climate change and human activity on actual ET were separated and quantified. The results demonstrated that: (1) the annual pattern of actual ET per pixel exhibited the highest values for arable land (average 362.4 mm/a/pixel), followed by forest land and grassland (average of 159.6 and 142.8 mm/a/pixel, respectively). Significant increasing linear trends (p < 0.05) of 3.2 and 1.8 mm/a were detected in the arable land and forest land time series, respectively; (2) precipitation was the most significant of the selected climate factors (precipitation, average temperature, sunshine duration, and wind speed) for all ecosystems. The second most significant was wind speed; (3) human activity caused 89%, 98%, and 80% of the changes in actual ET of forest, grass, and arable land, respectively, while climate change caused 11%, 2%, and 20% of the changes in actual ET, in the Aksu River Basin during 2000-2015.
资助项目	National Basic Research Program of China (973 Program)[2015CB452701] ; National Natural Science Foundation of China[41571019]
WOS关键词	WINTER-WHEAT ; WATER-BALANCE ; CROP PRODUCTION ; TRENDS ; YIELD ; EVAPORATION ; PLAIN ; GPP ; SATELLITE ; MODEL
WOS研究方向	Water Resources
语种	英语
出版者	IWA PUBLISHING
WOS记录号	WOS:000452413800004
资助机构	National Basic Research Program of China (973 Program) ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/51480]
专题	中国科学院地理科学与资源研究所
通讯作者	Xia, Jun
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430000, Hubei, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Yang, Peng,Xia, Jun,Zhan, Chesheng,et al. Separating the impacts of climate change and human activities on actual evapotranspiration in Aksu River Basin ecosystems, Northwest China[J]. HYDROLOGY RESEARCH,2018,49(6):1740-1752.
APA	Yang, Peng,Xia, Jun,Zhan, Chesheng,Chen, Xuejuan,Qiao, Yunfeng,&Chen, Jie.(2018).Separating the impacts of climate change and human activities on actual evapotranspiration in Aksu River Basin ecosystems, Northwest China.HYDROLOGY RESEARCH,49(6),1740-1752.
MLA	Yang, Peng,et al."Separating the impacts of climate change and human activities on actual evapotranspiration in Aksu River Basin ecosystems, Northwest China".HYDROLOGY RESEARCH 49.6(2018):1740-1752.